Weather Averages for Norristown, PA

7-day Forecast / 10-day Forecast

Latitude: 40°7'N, Longitude: 75°21'W, Elevation: 70.0 ft, Distance: 1.73 mi Norristown, PA Averages »

	Unit	Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Average temperature over 30 years	°F	53	29	32	41	51	62	71	75	74	66	55	45	35
Average high temperature over 30 years	°F	63	37	41	51	62	73	82	86	84	77	66	55	43
Average low temperature over 30 years	°F	43	21	23	32	41	51	60	65	64	56	44	36	26
Average precipitation over 30 years	in	44.4	3.3	3.0	3.5	3.7	4.2	3.6	4.5	4.1	4.1	3.0	3.8	3.6
Heating degree days over 30 years	days	5114	1091	913	722	390	121	8	-	-	55	305	579	930
Cooling degree days over 30 years	days	1022	-	-	-	-	46	206	338	301	115	16	-	-

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